iOS键盘高度自适应（中英文输入）

一：添加通知监测键盘高度变化

   [self keyBoardAutoSize];

二：动态改变高度

#pragma mark keyboard height auto
/*
 NSNotificationCenter：键盘出现、消失时的通知
 
 
 UIKeyboardWillShowNotification;
 UIKeyboardDidShowNotification;
 UIKeyboardWillHideNotification;
 UIKeyboardDidHideNotification;
 
 */

- (void) keyBoardAutoSize
{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardShow:) name:UIKeyboardWillShowNotification object:nil];

}


- (void)keyBoardShow:(NSNotification *) notif
{
    NSDictionary *info = [notif userInfo];
    NSValue *value = [info objectForKey:UIKeyboardFrameEndUserInfoKey];
    CGSize keyboardSize = [value CGRectValue].size;
    
    NSLog(@"keyBoard:%f", keyboardSize.height);  //216
        
    if (keyboardSize.height==216) {
        [UIView animateWithDuration:0.25 animations:^{
            bottomInput.top = kScreenHeight - 74 - keyboardSize.height;
        }];
    }
    //中文状态输入 252
    else if (keyboardSize.height== 252 )
    {
        [UIView animateWithDuration:0.1 animations:^{
            bottomInput.top = kScreenHeight - 74 - keyboardSize.height;
        }];
       
    }
    
 
}

　　

三：移除通知

- (void)dealloc

{

    [_hubTip release];

     [[NSNotificationCenterdefaultCenter]removeObserver:selfname:UIKeyboardWillShowNotificationobject:nil];

    [super dealloc];

}